Now is your
chance to test your knowledge and understanding of the battle against
cholera in the middle of the nineteenth century.

Dr. John Snow

Dr. John Snow, a
pioneering doctor who had worked with people suffering from cholera, became
interested in an outbreak in London in 1854. Your task is to view the
evidence he collected to try to work out what caused this outbreak of
cholera and why so many people died.

Move the mouse across
the map to find out what happened. Only one link will show up at any time.